Thursday, January23, 2020
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Marine Weather and Tides
St. Augustine Beach, FL

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:17AMSunset 5:55PM Thursday January 23, 2020 2:27 AM EST (07:27 UTC) Moonrise 6:24AMMoonset 4:53PM Illumination 4% Phase: Waning Crescent; Moon at 28 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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AMZ454 Expires:202001231600;;377622 Fzus52 Kjax 230701 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 201 Am Est Thu Jan 23 2020 Atlantic Coastal Waters From Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm. Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves, Along With The Occasional Height Of The Average Highest 1/10 Of The Waves. Amz450-452-454-231600- Coastal Waters From Altamaha Sound To Fernandina Beach Fl Out 20 Nm- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 201 Am Est Thu Jan 23 2020
.small craft advisory in effect through this evening...
Today..Northeast winds 15 to 20 knots. Seas 6 to 9 feet with occasional seas up to 11 feet subsiding to 5 to 7 feet with occasional seas up to 9 feet in the afternoon. Dominant period 10 seconds. Inland waters a moderate chop. A chance of showers.
Tonight..East southeast winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 10 seconds. Inland waters a moderate chop. A chance of showers.
Friday..South winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Friday night..Southwest winds 10 to 15 knots becoming west northwest after midnight. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Inland waters a moderate chop. A chance of showers.
Saturday..West northwest winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Inland waters a moderate chop.
Saturday night through Sunday night..Northwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. A chance of showers.
Monday..Northwest winds 5 to 10 knots. Seas 2 to 4 feet. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 201 Am Est Thu Jan 23 2020
Synopsis.. A coastal trough will move northward across the waters today. A cold front will move through the area Friday afternoon and Friday night. High pressure will then build into the area from the west through the weekend.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jan 23, 2020 at 1200 utc... 63 nautical miles east of flagler beach. 73 nautical miles east of saint augustine beach. 81 nautical miles east northeast of jacksonville beach. 80 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near St. Augustine Beach, FL
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location: 29.87, -81.26     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 230534 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 1234 AM EST Thu Jan 23 2020

AVIATION. [Through 06Z Friday]

Stratocumulus and some lower MVFR stratus around 1.0-1.5kft have made their way inland as northeast winds associated with a coastal trough bring in low level moisture off the Atlantic. Some VCSH will remain for SGJ and CRG to begin the period with VCSH for JAX and VQQ after 14Z and at SSI after 15Z as showers move in from the coastal trough. Winds will remain elevated at the JAX area terminals JAX, VQQ and CRG and the coastal sites SGJ and SSI after 14/15Z with winds around 14-16 knots and wind gusts to 20-24 knots through the end of the period as this coastal trough persists near the NE FL/ SE GA coast.

PREV DISCUSSION [842 PM EST].

NEAR TERM [Through Thursday].

Cloud cover continues to spread across the area this evening as a coastal trough develops over our nearshore waters. Showers over our coastal waters move onshore across Flagler and St. Johns Counties this afternoon into evening. Showers continue to push further inland into tomorrow but should remain within the US-301 corridor. Low pressure over the Bahamas and arctic high pressure over the Mid-Atlantic coast move eastward away from the region causing the low level steering flow to change from northeasterly tonight into south-southwesterly tomorrow. This will end cold air advection and allow temperatures to return to seasonable. Lows tonight range from the upper 30s over inland southeast Georgia to low 50s along the northeast Florida coast. Highs tomorrow will generally be in the 60s.

SHORT TERM [Friday Through Saturday].

South-southwesterly flow develops ahead of the next front advecting warm, moist air from the Gulf. Highs on Friday warm above normal into the upper 60s to mid 70s. A line of showers and storms moves in from the west Friday into Friday night ahead of the cold front. With decent instability, there is a slight chance for thunderstorms Friday afternoon. Showers end from west to east Friday night. High pressure builds in behind the front filtering in colder, drier air. Low temperatures Saturday night dip into the mid 30s to low 40s.

LONG TERM [Sunday Through Tuesday].

High pressure remains over the region until mid-week bringing mainly cool and dry conditions. However, on Sunday into Monday, a Gulf low passes to our south potentially bringing some showers to the area. Best chance for showers will be south of I-10. Seasonable temperatures return with highs in the 60s and lows generally in the 40s.

MARINE.

Gale force gusts over the coastal waters will weaken tonight as low pressure over the northern Bahamas moves east-southeastward away from the region and arctic high pressure moves over the Mid- Atlantic coast. Small Craft Advisories will replace the Gale Warning this evening. Winds tonight shift from northerly to northeasterly. Scattered showers continue into tomorrow as a coastal trough moves onshore. Winds weaken and shift to south- southeasterly ahead of the next frontal passage, however, seas remain elevated in the 7 to 9 feet range so SCA headlines continue for the offshore waters. A cold front moves through Friday afternoon into evening bringing showers and an isolated thunderstorm. Behind the frontal passage, winds shift to offshore and seas begin to subside.

Rip Currents/High Surf/Coastal Flood:

With winds shifting to northeasterly, surf will remain elevated along the NE FL coast to 7-9 feet with a high risk of rip currents that will continue through Thursday. The approach of the New Moon and onshore flow will also produce elevated water levels during times of high tide with values peaking around 1 to 1.5 feet above MHHW ("ground level"), likely just below minor coastal flooding levels and will continue the Coastal Flood Statement through Thursday for coastal northeast Florida.

PRELIMINARY POINT TEMPS/POPS.

AMG 59 49 69 41 59 / 10 40 60 20 0 SSI 59 55 67 46 60 / 20 10 40 30 0 JAX 64 54 75 46 64 / 20 10 40 30 0 SGJ 66 58 74 49 65 / 40 10 30 30 0 GNV 67 55 75 45 65 / 10 10 30 10 0 OCF 70 55 75 46 67 / 10 10 30 10 0

JAX WATCHES/WARNINGS/ADVISORIES. FL . High Rip Current Risk through late tonight for Coastal Duval- Coastal Flagler-Coastal Nassau-Coastal St. Johns.

High Surf Advisory until 4 AM EST Friday for Coastal Duval- Coastal Flagler-Coastal Nassau-Coastal St. Johns.

GA . None. AM . Small Craft Advisory until 7 PM EST Friday for Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM.

Small Craft Advisory until 11 PM EST this evening for Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM-Coastal waters from St. Augustine to Flagler Beach FL out 20 NM.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 1 mi28 min N 20 G 22 58°F 56°F1019.9 hPa (-1.5)
41117 13 mi28 min 61°F10 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 15 mi103 min N 11 57°F 1022 hPa55°F
LTJF1 37 mi58 min 55°F 49°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 38 mi58 min 55°F 55°F1021.8 hPa
BLIF1 39 mi58 min 54°F 1022.5 hPa52°F
DMSF1 39 mi58 min 57°F
NFDF1 41 mi58 min 50°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Northeast Florida Regional Airport, FL8 mi32 minN 13 G 1910.00 miPartly Cloudy55°F52°F90%1020.6 hPa

Link to 5 minute data for KSGJ

Wind History from SGJ (wind in knots)
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Tide / Current Tables for St. Augustine Beach, Atlantic Ocean, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Crescent Beach, Matanzas River, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_A
GEOS Local Image of Southeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (2,6,7,8)
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Ground Weather Radar Station Jacksonville, FL
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.